US11892043B2 - Boot for caliper brake and caliper brake including the same - Google Patents
Boot for caliper brake and caliper brake including the same Download PDFInfo
- Publication number
- US11892043B2 US11892043B2 US17/372,377 US202117372377A US11892043B2 US 11892043 B2 US11892043 B2 US 11892043B2 US 202117372377 A US202117372377 A US 202117372377A US 11892043 B2 US11892043 B2 US 11892043B2
- Authority
- US
- United States
- Prior art keywords
- coupling part
- boot
- guide rod
- elastic
- elastic protrusion
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 230000008878 coupling Effects 0.000 claims abstract description 69
- 238000010168 coupling process Methods 0.000 claims abstract description 69
- 238000005859 coupling reaction Methods 0.000 claims abstract description 69
- 238000006243 chemical reaction Methods 0.000 claims abstract description 17
- 239000000126 substance Substances 0.000 claims description 4
- 230000003247 decreasing effect Effects 0.000 claims description 3
- 238000007789 sealing Methods 0.000 description 4
- 239000012530 fluid Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000005489 elastic deformation Effects 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D65/00—Parts or details
- F16D65/02—Braking members; Mounting thereof
- F16D65/04—Bands, shoes or pads; Pivots or supporting members therefor
- F16D65/092—Bands, shoes or pads; Pivots or supporting members therefor for axially-engaging brakes, e.g. disc brakes
- F16D65/095—Pivots or supporting members therefor
- F16D65/097—Resilient means interposed between pads and supporting members or other brake parts
- F16D65/0971—Resilient means interposed between pads and supporting members or other brake parts transmitting brake actuation force, e.g. elements interposed between brake piston and pad
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D55/00—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes
- F16D55/02—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members
- F16D55/22—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads
- F16D55/224—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a common actuating member for the braking members
- F16D55/225—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a common actuating member for the braking members the braking members being brake pads
- F16D55/226—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a common actuating member for the braking members the braking members being brake pads in which the common actuating member is moved axially, e.g. floating caliper disc brakes
- F16D55/2265—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a common actuating member for the braking members the braking members being brake pads in which the common actuating member is moved axially, e.g. floating caliper disc brakes the axial movement being guided by one or more pins engaging bores in the brake support or the brake housing
- F16D55/22655—Constructional details of guide pins
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D55/00—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes
- F16D55/02—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members
- F16D55/22—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads
- F16D55/224—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a common actuating member for the braking members
- F16D55/225—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a common actuating member for the braking members the braking members being brake pads
- F16D55/226—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a common actuating member for the braking members the braking members being brake pads in which the common actuating member is moved axially, e.g. floating caliper disc brakes
- F16D55/2265—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a common actuating member for the braking members the braking members being brake pads in which the common actuating member is moved axially, e.g. floating caliper disc brakes the axial movement being guided by one or more pins engaging bores in the brake support or the brake housing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D55/00—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes
- F16D55/02—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members
- F16D55/22—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads
- F16D55/224—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a common actuating member for the braking members
- F16D55/225—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a common actuating member for the braking members the braking members being brake pads
- F16D55/226—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a common actuating member for the braking members the braking members being brake pads in which the common actuating member is moved axially, e.g. floating caliper disc brakes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D65/00—Parts or details
- F16D65/005—Components of axially engaging brakes not otherwise provided for
- F16D65/0068—Brake calipers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D65/00—Parts or details
- F16D65/005—Components of axially engaging brakes not otherwise provided for
- F16D65/0087—Brake housing guide members, e.g. caliper pins; Accessories therefor, e.g. dust boots
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D65/00—Parts or details
- F16D65/02—Braking members; Mounting thereof
- F16D65/04—Bands, shoes or pads; Pivots or supporting members therefor
- F16D65/092—Bands, shoes or pads; Pivots or supporting members therefor for axially-engaging brakes, e.g. disc brakes
- F16D65/095—Pivots or supporting members therefor
- F16D65/097—Resilient means interposed between pads and supporting members or other brake parts
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D65/00—Parts or details
- F16D65/14—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position
- F16D65/16—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position arranged in or on the brake
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2121/00—Type of actuator operation force
- F16D2121/02—Fluid pressure
- F16D2121/04—Fluid pressure acting on a piston-type actuator, e.g. for liquid pressure
Definitions
- the disclosure relates to a boot for a caliper brake and the caliper brake including the same, and more particularly, to a caliper brake including a boot for rolling-back a caliper housing when braking is released.
- a caliper brake in general, includes a carrier on which a pair of pad plates are mounted to advance and retreat to press a disk rotating together with a wheel of a vehicle, a caliper housing provided with a cylinder slidably mounted on the carrier through a guide rod and in which a piston is installed to advance and retreat by a braking hydraulic pressure, and the like.
- the caliper brake performs braking as the piston presses the inner pad plate by the hydraulic pressure during braking and the caliper housing slides from the carrier by a reaction force against the pressing to press the outer pad plate toward the disk.
- the caliper brake may further include an electrically operated actuator and perform parking braking as a spindle unit, which receives a rotational force from a motor of the actuator and converts a rotational motion into a linear motion, presses the piston.
- the caliper brake may retreat the piston using a seal member accommodated in a seal groove formed on the cylinder and a roll-back chamber in the seal groove.
- the seal member is formed in a ring shape to be inserted into the annular seal groove formed on an inner surface of the cylinder of the caliper housing and disposed between the inner surface of the cylinder and an outer surface of the piston.
- the seal member performs a function of preventing leakage of a braking fluid by sealing between the inner surface of the cylinder and the outer surface of the piston and a function of returning the piston to its original position. That is, the seal member functions to return the piston, which has advanced, by an elastic force of the seal member to its original position after the braking is finished. This function is called a roll-back.
- a drag phenomenon occurs in which in high pressure braking, the piston continues to slidingly advance while the elastic deformation of the seal member is completed, so that the piston does not return smoothly to its original position when braking is released, thereby causing friction between the disk and the friction pad.
- a required amount of braking fluid increases, which may increase an invalid stroke and deteriorate pedal feel when a brake pedal is operated.
- a retraction spring is installed and used on the pair of pad plates.
- the retraction spring is installed at an upper end of the pair of pad plates to provide an elastic force to the pad plates.
- the retraction spring is disposed between the upper end of the pair of pad plates and the caliper housing.
- a boot which is provided to be installed on a guide rod to allow a caliper housing to be slidably coupled to a carrier during braking, includes a first coupling part coupled to the guide rod at one end thereof, and a second coupling part coupled to the carrier at the other end thereof, wherein the second coupling part is provided with an elastic protrusion provided to be in contact with an outer surface of the guide rod so that a reaction force is generated by the guide rod moving together with the caliper housing during braking.
- a caliper brake includes a carrier fixed to a vehicle body, a caliper housing installed on the carrier to advance and retreat, a guide rod having one end fixed to the caliper housing and the other end slidably coupled to a guide hole provided on the carrier to slidably couple the caliper housing to the carrier, and a boot mounted on the guide rod and the carrier to prevent foreign substances from being introduced into the guide hole, wherein the boot includes a first coupling part coupled to the guide rod at one end thereof, and a second coupling part coupled to the carrier at the other end thereof, and wherein the second coupling part is provided with an elastic protrusion provided to be in contact with an outer surface of the guide rod so that a reaction force is generated by the guide rod moving together with the caliper housing during braking.
- the boot may further include a corrugate part provided to connect the first coupling part and the second coupling part and to extend or contract when the guide rod moves.
- the elastic protrusion may be formed to protrude obliquely in a moving direction of the guide rod moving during braking.
- the second coupling part may be formed in a ring shape, and the elastic protrusion may be integrally formed to protrude from an inner circumferential surface of the second coupling part.
- a plurality of the elastic protrusions may be provided to be spaced apart from each other at predetermined intervals along the inner circumferential surface of the second coupling part.
- a plurality of the elastic protrusions may be formed in a moving direction of the guide rod.
- a fastening groove to which the second coupling part is coupled may be provided in the guide hole, and a protrusion protruding toward the fastening groove to be seated on and coupled to the fastening groove may be provided at a coupling end of the second coupling part coupled to the fastening groove.
- the guide rod may be provided with a locking groove provided such that the first coupling part is fitted and fixed thereto.
- FIG. 1 is a cross-sectional view of a caliper brake according to an embodiment of the disclosure
- FIG. 2 is a partially cut-away perspective view of a boot provided in the caliper brake according to an embodiment of the disclosure
- FIG. 3 is an exploded cross-sectional view illustrating a state in which the boot is coupled to a guide hole and a guide rod in the caliper brake according to an embodiment of the disclosure
- FIG. 4 is a cross-sectional view illustrating a state in which the boot in FIG. 3 is coupled;
- FIG. 5 is a view illustrating a roll-back state of a caliper housing according to a reaction force of the boot generated when the caliper brake according to an embodiment of the disclosure brakes;
- FIG. 6 is a cross-sectional view of a boot according to another embodiment of the disclosure.
- FIG. 1 is a cross-sectional view of a caliper brake according to an embodiment of the disclosure
- FIG. 2 is a partially cut-away perspective view of a boot provided in the caliper brake according to an embodiment of the disclosure
- FIG. 3 is an exploded cross-sectional view illustrating a state in which the boot is coupled to a guide hole and a guide rod in the caliper brake according to an embodiment of the disclosure
- FIG. 4 is a cross-sectional view illustrating a state in which the boot in FIG. 3 is coupled.
- a caliper brake 100 includes a pair of pad plates 111 and 112 to which friction pads 113 are attached to press opposite sides of a disk D rotating together with a wheel (not shown), respectively, a carrier 120 on which the pair of pad plates 111 and 112 are installed to be spaced apart from each other by a predetermined distance and to be movable toward the disk D, a caliper housing 130 slidably installed on the carrier 120 such that the pair of pad plates 111 and 112 may press the disk D, a guide rod 140 having one end fixed to the caliper housing 130 and the other end slidably coupled to a guide hole 124 provided on the carrier 120 to slidably couple the caliper housing 130 to the carrier 120 , and a boot 150 mounted on the guide rod 140 and the carrier 120 to prevent foreign substances from being introduced into the guide hole 124 .
- the friction pad 113 is attached to an inner surface of each of the pair of pad plates 111 and 112 .
- the pair of pad plates 111 and 112 include the inner pad plate 111 disposed in contact with a piston 131 and the outer pad plate 112 disposed in contact with a finger part 132 of the caliper housing 130 , which will be described later, and are slidably installed on the carrier 120 . That is, the pair of pad plates 111 and 112 are installed on the carrier 120 fixed to a vehicle body to advance toward and retreat from the opposite sides of the disk D, thereby performing a braking operation.
- the carrier 120 is fixedly coupled to a knuckle (not shown) of the vehicle body to be positioned on one side of an outer circumference of the disk D.
- the guide holes 124 are formed in upper opposite sides of the carrier 120 .
- a fastening groove 125 is provided at an open inlet portion of the guide hole 124 such that the boot 150 , which will be described later, is coupled thereto.
- the caliper housing 130 is slidably installed on the carder 120 as the guide rods 140 respectively installed at opposite ends of the caliper housing 130 are inserted into the guide holes 124 provided at opposite ends of the carrier 120 .
- mounting parts 134 having coupling holes 134 a formed at positions corresponding to the guide holes 124 are provided at the opposite ends of the caliper housing 130 . Accordingly, one end of the guide rod 140 is coupled to the mounting part 134 , and the other end of the guide rod 140 is inserted into the guide hole 124 .
- the guide rod 140 includes a cylindrical guide shaft portion 144 and a head portion 142 provided in the form of an enlarged diameter at one end of the guide shaft portion 144 .
- a thread groove is formed on an inner circumferential surface of the head portion 142 so that a fixing bolt 138 may be coupled, and a locking groove 141 recessed to a predetermined depth is formed on an outer circumferential surface of the head portion 142 .
- the guide shaft portion 144 is slidably inserted and coupled to the guide hole 124 of the carder 120 , and the fixing bolt 138 passes through the coupling hole 134 a of the caliper housing 130 and is screwed into the thread groove of the head portion 142 , the guide rod 140 is firmly and fixedly coupled to the capper housing 130 so that the carrier 120 and the caliper housing 130 are mutually movable.
- the caliper housing 130 includes a cylinder 133 in which a piston 131 for pressing the inner pad plate 111 is installed to advance and retreat, and the finger part 132 for pressing the outer pad plate 112 .
- the piston 131 is installed in the cylinder 133 to advance and retreat.
- the piston 131 presses the inner pad plate 111 while advancing when braking hydraulic pressure is applied to the cylinder 133 , the caliper housing 130 slides from the carrier 120 together with the guide rods 140 by a reaction force, and the finger part 132 presses the outer pad plate 112 toward the disk D. Accordingly, the pair of pad plates 111 and 112 press the disk 0 , thereby generating a braking force.
- Reference numeral ‘ 139 ’ denotes a seal member which is provided between the cylinder 133 and the piston 131 and installed in the seal groove 133 a formed on the cylinder 133 . That is, the seal member 139 performs a function of preventing leakage of a braking fluid by sealing between an inner surface of the cylinder 133 and an outer surface of the piston 131 and a function of returning the piston 131 to its original position when braking is released.
- the boot 150 is provided to surround the outside of the guide rod 140 in order to prevent the inflow of foreign substances into the guide hole 124 .
- the boot 150 includes a corrugate part 153 provided to extend and contract in a longitudinal direction, a first coupling part 151 extending from one end of the corrugate part 153 to be coupled to the guide rod 140 , and a second coupling part 152 extending from the other end of the corrugate part 153 to be coupled to the carrier 120 .
- the boot 150 may have a hollow center so as to surround the guide rod 140 . Accordingly, the first coupling part 151 and the second coupling part 152 may be provided to have a ring shape.
- the first coupling part 151 may be fixed by being press-fitted into the locking groove 141 formed on the head portion 142 of the guide rod 140 .
- the second coupling part 152 is provided to be in contact with an outer surface of the guide rod 140 , that is, the guide shaft portion 144 , and is coupled to the fastening groove 125 formed on the guide hole 124 .
- the second coupling part 152 may be provided with a protrusion 155 protruding toward the fastening groove 125 to be seated on and coupled to the fastening groove 125 .
- the second coupling part 152 may be provided with an elastic protrusion 154 provided to be in contact with the outer surface of the guide rod 140 , that is, the guide shaft portion 144 so that a reaction force is generated by the guide rod 140 moving together with the caliper housing 130 during braking.
- the elastic protrusion 154 may be integrally formed to protrude from an inner circumferential surface of the second coupling part 152 .
- the elastic protrusion 154 may be formed to protrude obliquely in a moving direction of the guide rod 140 moving during braking. That is, by the elastic protrusion 154 , an inner diameter of the second coupling part 152 may be provided to gradually decrease in the moving direction of the guide rod 140 (from left to right based on FIG. 5 ) during braking.
- the elastic protrusion 154 because the elastic protrusion 154 generates a reaction force depending on the movement of the guide rod 140 only during braking, the elastic protrusion 154 applies a load to the guide rod 140 in the opposite direction (arrow B) to the braking direction by an elastic restoring force according to the reaction force after the braking is released, so that a roll-back function of returning the caliper housing 130 moving together with the guide rod 140 to its original position is performed.
- the elastic protrusion 154 does not generate a reaction force in a on-operational state of the brake, and performs a sealing function.
- a plurality of the elastic protrusions 154 may be provided to be spaced apart from each other at predetermined intervals along the inner circumferential surface of the second coupling part 152 . Accordingly, slots 156 may be formed in a longitudinal direction between the plurality of elastic protrusions 154 provided along the inner circumferential surface of the second coupling part 152 . By the slot 156 , a space in which the elastic protrusion 154 may be easily elastically deformed may be secured.
- one of the elastic protrusion 154 is provided in the longitudinal direction of the guide rod 140 on the inner circumferential surface of the second coupling part 152 as an example, but is not limited thereto, and as illustrated in FIG. 6 , a boot 150 ′ may be provided in which a plurality of elastic protrusions 154 a , 154 b , and 154 c is formed in the moving direction of the guide rod (refer to ‘ 140 ’ in FIG. 5 ).
- the boot 150 ′ may include the plurality of elastic protrusions 154 a , 154 b , and 154 c in the longitudinal direction on the inner circumferential surface of the second coupling part 152 .
- the same reference numerals as in the previous embodiment indicate members having the same function.
- the plurality of elastic protrusions 154 a , 154 b , and 154 c may each generate a reaction force during braking, and may perform a function of rolling-back the caliper housing 130 by a predetermined amount by an elastic restoring force according to the reaction force when the braking is released.
- each of the elastic protrusions 154 a , 154 b , and 154 c performs a sealing function in the non-operational state of the brake.
- three of the elastic protrusions 154 a , 154 b , and 154 c are provided in the longitudinal direction as an example, but is not limited thereto, and the number may be selectively increased or decreased as long as the caliper housing 130 may be sufficiently rolled-back.
- a boot for a caliper brake according to an embodiment of the disclosure and a caliper brake including the same can prevent a drag phenomenon by generating a reaction force of the boot during braking to roll-back a caliper housing.
- the boot for a caliper brake according to an embodiment of the disclosure and the caliper brake including the same can reduce manufacturing costs because a retraction spring to be separately installed is unnecessary to secure a clearance between a disk and a friction pad of a pad plate as the drag phenomenon is prevented by a structure of the boot improved compared to a conventional boot commonly used.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Braking Arrangements (AREA)
- Diaphragms And Bellows (AREA)
Abstract
Description
Claims (19)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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KR10-2020-0087237 | 2020-07-15 | ||
KR1020200087237A KR20220009037A (en) | 2020-07-15 | 2020-07-15 | Boot and caliper brake having the same |
Publications (2)
Publication Number | Publication Date |
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US20220018406A1 US20220018406A1 (en) | 2022-01-20 |
US11892043B2 true US11892043B2 (en) | 2024-02-06 |
Family
ID=79293339
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US17/372,377 Active US11892043B2 (en) | 2020-07-15 | 2021-07-09 | Boot for caliper brake and caliper brake including the same |
Country Status (3)
Country | Link |
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US (1) | US11892043B2 (en) |
KR (1) | KR20220009037A (en) |
CN (1) | CN113944704A (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
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CN112888872B (en) * | 2018-09-28 | 2023-08-18 | 大陆汽车科技有限公司 | Improved flexible dust cover for automotive brake cylinder |
WO2023104993A1 (en) | 2021-12-08 | 2023-06-15 | Continental Automotive Technologies GmbH | Motor vehicle disc brake with bellows-type sleeve for sealing a bolt guide device and bellows-type sleeve |
Citations (15)
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US5730258A (en) * | 1996-07-19 | 1998-03-24 | Evans; Michael D. | Bushing assembly for a caliper disk brake |
US5927446A (en) * | 1995-11-07 | 1999-07-27 | Kelsey-Hayes Company | Slide pin bushing and boot seal assembly for disc brake assembly |
US6039156A (en) * | 1997-06-17 | 2000-03-21 | Kelsey Hayes Company | Slide pin bushing for disc brake assembly |
US20040188191A1 (en) * | 2003-03-31 | 2004-09-30 | Sky Lintner | Slide pin bushing for disc brake assembly |
US7337881B1 (en) * | 2005-07-28 | 2008-03-04 | Robert Bosch Gmbh | Full float multi-force caliper assembly |
US20080070706A1 (en) * | 2006-09-14 | 2008-03-20 | Richard Alfred Compau | Dual Channel Vented Boot |
US20090260928A1 (en) * | 2006-10-24 | 2009-10-22 | Knorr-Bremse Systeme Fuer Nutzfahrzeuge Gmbh | Disc Brake, In Particular for a Utility Vehicle |
KR20100007501A (en) | 2008-07-14 | 2010-01-22 | 주식회사 만도 | Disk brake for vehicle |
US20120234635A1 (en) * | 2010-10-28 | 2012-09-20 | Advics Co., Ltd. | Pin slide-type floating disc brake |
US20130161134A1 (en) | 2011-12-27 | 2013-06-27 | Akebono Brake Industry Co., Ltd. | Disc brake apparatus |
KR101526257B1 (en) * | 2013-12-12 | 2015-06-05 | 주식회사 만도 | Disc brake |
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Also Published As
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KR20220009037A (en) | 2022-01-24 |
CN113944704A (en) | 2022-01-18 |
US20220018406A1 (en) | 2022-01-20 |
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